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    <title>Triangle tests</title>
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    <h2>Triangle tests</h2>
        <p>
            Triangle test is shown on picture 1. It can check if patient have binocular vision.
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        <p>
            
            Parallax of triangles can be increased by pressing key &uarr; or decreased by pressing key &darr;.
            It makes possible to check occurrence of binocular vision for different angles of stereoscopy.
            After each test start, parallax is 10' (minutes af angle).
        </p>
        <p>
            Distance between traingles <i>x</i> is calculated on the basics of distance from monitor <i>l</i> from following equation.
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                <img src="../../images/eqnPhoria.png" />
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            <img src="../../images/testTriangle.png" />
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            <i>Image 1. Triangle test</i>
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